Welt shoe sewing machines



1959 o. F. HOPPE ETI'AL 2, 8, WELT SHOE SEWING MACHINES 4 Sheets-Sheet 1Filed July 2, 1954 In ven tors F 06250 fi'azzz Jan. 13', 1959 F, HOPPEET A 2,868,148

WELT SHOE SEWING MACHINES Filed July 2 1954 4 Sheets-Sheet 3 In ven tors1959 o. F. HOPPE ETAL 2,86

. WELT SHOE SEWING MACHINES Filed July 2, 1954 4 Sheets-Sheet 4 zit:

- '4 IIIIIII {III/IIIA 1 III/II In ventorg United States Patent2,368,148 Patented Jan. 13, 1 959 2,868,148 WELTSHOE SEWING MACHINESOtto Franz Hoppe, Schonberg, and Heinrich Richard v Ruhr, Frankfurt amMain, Germany, assiguors, by

mesne assignments, to United Shoe Machinery Corporation, Flemington, N.J., a corporation of New Jersey Application July 2, 1954, Serial N 0.441,144

Claims priority, application Germany July 10, 1953 13 Claims. (Cl.1'12-46) The present invention relates to welt wetting and temperingdevices intended for use with shoe sewing machines, and moreparticularly to improvements in welt shoe sewing machines equipped withwelt tempering devices which are readily adjustable and adaptable foruse under different conditions with varying styles and sizes of welts. t

In United States Letters Patent No. 1,972,970, granted September 11,1934, upon application of Fred Ashworth, a welt tempering device isdisclosed similar to that embodying the present invention. That deviceis provided with a series of interchangeable welt enclosing guides forimmersing a welt Within a moistening liquid contained in a suitablereceptacle. In use the patented device has been found to set upfrictional resistance within the guides as they engage the welt toimmerse it within the moisten ing liquid. Occasionally excessiveresistance is imparted to the welt as it is drawn towards the point ofoperation of the machine. To o-vercomethis difliculty it has been founddesirable to employ a feeding device for pulling the welt through themoistening device in order to deliver it to the sewing machine as freeas possible from tension. For this purpose a welt feeding device hasbeenemployed similar to that disclosed in United States Letters Patent No.2,321,610, granted June 15, 1943, upon application of A. R. Morrill. Inthis feeding device the welt is wrapped loosely about a continuallyrotating roll and is pressed intermittently into frictional engagementtherewith whenever the machine exerts a light tension on the welt.Intermittent exertion of even a light tension on the welt, however, isdetrimental to smooth operation of a welt sewing machine and for thisreason use of both the welt tempering and the feeding device has notbecome widespread in spite of the desirability of properly tempering awelt before sewing. 1

v The basic purposes of the present invention are to overcome thedifficulties encountered in the use of prior welt tempering devices forshoe sewing machines, to provide such devices 'withsuitably arrangedguides for directing welt through a m'oistening liquid in a manner whichwill avoid impressing frictional resistance on the welt in large degreeand to provide a feeding device which insures delivery of welt to asewing machine uniformly free of tension while at the same timepreserving features of adaptability, quick threading of the welt throughthe machine, uniformity of tempering operations and durability not foundin the prior machines. Another purpose is to pro vide an improved weltfeeding device for a shoe sewing machine which'will enable tension freewelt to be delivered to the machine under all circumstances, thusimproving the welt sewing operation. A further object is ning throughmoisteningliquid contained in the receptacle of the tempering deviceembodying the present invention, a simplified and improved frictioneliminating immersion guide is provided which not only reduces the dragimparted to the welt running through the device but which is arrangedalso to facilitate quick threading of the welt, as well as to enableeasy adjustment to different forms of welt, such as beaded storm weltand flat welt of various sizes and dimensions. To these ends the sewingmachine in which the present invention is embodied includes the usualstitch forming and shoe feeding devices and their actuating mechanisms,a sewing welt guide for directing a welt into the point of operation ofsaid devices and a receptacle for a welt moistening liquid on which ismounted a Welt immersing means comprising a roll rotating onan axisinclined to the surface of the liquid in the receptacle, the rollpressing the welt beneath the level of the liquid, an edge guide flangeextending into theliquid in-the receptacle and acting to direct one edgeof the welt through the liquid, a stud for the roll on the flange and aresilient edge gage engaging the edge of the welt to press it againstthe edge. guide flange.

For the most beneficial welt tempering results the edge guide flange isformed on a bracket along which the lower edge of the welt is directedand a stud on which the imrnersion roll is rotatably mounted extendsupwardly at right angles from the guide flange at the preferred angularinclination to the level of the liquid. In order to insure convenientaccess to .the immersion roll for the purpose either of applying thewelt or replacing the roll it is mounted for ready removal from thestud.

The frictional resistance imparted to the welt is kept uniformly lowthrough the use of welt guide rolls properly located to keep the welt inits horizontal path until 'it reaches the sewing welt guide and isreduced fro-m the amount met with in prior constructions to such anextent that it is possible toemploy a simple form of welt feed dogconnected to adjustable mechanism for actuating the feeding devices ofthe sewing machine. The feed dog delivers the welt at all times from themoistening liquid in a tension free condition to the sewing machine, theconnection with the feeding mechanism of the sewing machine being suchthat the welt is drawn through the moistening liquid at a rate of speedslightly greater than the feeding movement imparted to a shoe by thefeeding devices without causing excessive overfeed regardless ofadjustments of the feed length. While this feature of the invention isparticularly beneficial when employed with a welt tempering device for asewing machine, it is also useful when a welt is being sewn which doesnot require mo-istening or when an operation is being performed in whichno welt tempering device is utilized.

These and other features of the invention, as hereinafter described andclaimed will readily be apparent to those skilled inthe art from thefollowing detailed specifiaction taken in connection with theaccompanying drawings, in which:

Fig. 1 is a perspective view-looking from the right front of a shoeinseam sewing machine embodying the features of the present invention;

Fig. 2 is a detail sectional plan view on an enlarged scale of a feedslide and its actuating lever in the machine of Fig. 1;

Fig. 3 is a detail view in right side elevation of the feed slide andactuating lever;

Fig. 4 is a plan view on a further enlarged scale of the welt temperingdevice of the machine illustrated in Fig. 1;

Fig. 5 is a vertical sectional view taken along the line VV of Fig. 4;

Fig. 6 is a detail view of a substitute welt guide roll employed in thewelt tempering device;

' VIlL-VIII of Fig. 4;

Fig. 9 is a detail sectional view of a welt feed dog and its mountingtaken along the line IX-IX of Fig. 7; and

Fig. 10 is a similar view showing the welt feed dog disengaged from thewelt.

The machine of the present invention is a welt shoe sewing machinesimilar to that disclosed in United States Letters Patent No. 1,108,560,granted August 25, 1914, upon application of Andrew Eppler and No.1,971,575, granted August 28, 1934, upon application of Alfred R.Morrill. The machine frame has a sewing guide 2 to direct the welt intothe point of operation or" the stitch forming and feeding devices,including a curved hook needle 4 and a curved work feeding awl 5. Foractuating the stitch forming and feeding devices the machine is providedwith mechanisms corresponding to those of the patent, some of whichmechanisms will be described more fully below. For retaining a supply ofwelt moistening liquid the present machine has mounted on it a cast ironreceptacle 6 in which the liquid is maintained at a constant height by afloat valve control bottle 8 supported within a receiver 10, the bottlehaving a float valve cap 12 (Fig. resting on a lug 14 projecting upwardyfrom the bottom surface of the receiver which communicates with thereceptacle 6.

In order to mount the receptacle and receiver on the machine its headframe, indicated at 16, has passing through it a vertical bolt 18extending upwardly into threaded engagement with a bearing stanchion 20.The bolt 18 passes loosely through one end of an arm 22 rigidly clampedto the underside of the frame by the head of the bolt, and the other endof the arm has an opening through which the threaded lower end of aclamp screw 24 passes. Above the arm 22 the clamp screw is secured to alaterally projecting lug on the receptacle 6.

In the welt tempering device of the Ashworth patent above referred tothe welt is carried through moistening liquid in a receptacle with theplane of the welt inclined at an angle to the surface of the liquid toensure entry of the liquid into the groove of the welt with a minimumextent of immersion. The welt is led through a series of guides in theform of slotted plates which cause the welt to travel in as straight apath as is possible from a source of supply. In order to bring the weltinto line with the point of sewing operations from the prior temperingdevice it is necessary to lead the welt through rightangle bends, whichare likely to impart excessive frictional resistance to the welt as itapproaches the sewing machine. After passing through the guides the weltis drawn into the sewing point of the machine solely by the feedingaction of the machine. As the welt is drawn through the slots of theguides a certain amount of friction is imparted to it which increasesthe burden imposed on the stitch forming and feeding devices, and, insome instances, due to irregularities in the dimensions of the welt, theresistance offered along the right-angle bends become excessive, so thatimproper operation results. To overcome these difficulties and to enablethe welt to be delivered in a tension free condition to the stitchforming device in the present machine the slotted plate whichfrictionally engages the welt is replaced by a friction reducing guideconstructed in the form of a freely rotating roll for directing the welttoward and from the moistening liquid and other guides which maintainthe welt in a' substantially horizontal path, the immersed section ofwhich welt comprises a twist about a lengthwise axis to rolls 28, 30 and32 having axes inclined at an angle to the level'of the liquid in thereceptacle 6. The roll 26 has flanges at both of its ends (see Fig. 4)and is rotatable on a horizontal screw 33 threaded into the receiver 10.The rolls 28 and 32 have flanges at their forward upper ends only. Theaxes of the rolls 28 and 32 comprise a pair of similar screws 34threaded into a welt guide plate formed by an inclined flange 36 fixedon a bracket 38. From the roll 32 the welt is delivered directly intothe sewing point of the machine with substantially no deviation from thehorizontal welt path, the path extending forwardly and downwardly onlyslightly, as indicated in Fig. 1.

The rolls 28 and 32 form a welt twisting immersing and moistening guidetogether with the main immersing roll 38 which rotates on an axisinclined at an angle to the horizontal surface of the liquid in thereceptacle 6 and parallel to the axes of the rolls 28 and 32. The loweredge of the welt is pressed against the underside of the welt immersingroll 30 and beneath the level of the liquid and passes over the uppersurfaces of rolls 28 and32 while the upper edge of the welt is kept freeof the liquid. To maintain the welt under proper control, the flanges onthe rolls and the inclination of the roll axes with relation to eachother prevents displacement of the welt in any direction across theirsurfaces.

For convenience in mounting the immersing roll 30 and in applying thewelt thereto, this roll is rotatably mounted for ready removal on a stud40 (see Fig. 5) extending upwardly at right angles from the higher sideof the fixed flange 36 of the bracket 38. The bracket is slidablymounted on the upper end of a vertical rod 41 which is clamped by a setscrew 42 (Fig. 5) threaded in a passage extending through a rearenlargement of the receptacle containing the moistening liquid. Thearrangement is such that the bracket with the guide rolls 28 and 32 andthe immersing roll 30 between them are movable as a unit verticallytoward and from the moistening liquid in the receptacle.

To prevent the roll mounting bracket 38 from swinging about the verticalrod 41, the bracket has formed in its right end a slot providedwith'opposed bearing surfaces engaging a square bar 43 (see Fig. 4)extending upwardly from the rear of the receptacle 6 in parallelrelation to the vertical rod 41. During operation of the machine thebracket 38 holds the roll-30 in a position with the lowermost portion ofits peripheral edge dipping below the level, indicated in Fig. 5 at 44,of the moistening liquid within the receptacle. The bracket is adjustedwith relation to the level 44 of the moistening liquid to a positionsuch that a welt, indicated at 46, having the usual groove 47 isimmersed at least to the depth of the groove along one side of the weltand slightly below the corner of the welt at the side opposite thegroove. To guide the welt accurately the guide flange 36 extends intothe liquid in the receptacle at an angle to its level 44, and as theimmersing roll 30 rotates the welt is flexed downwardly about it andpressed to the proper depth beneath the liquid level.

To insure that the lower edge of the welt is directed by and maintaineduniformly in contact with the edge guide flange 36, the bracket 38supports a resilient edge gage 48, formed at its lower end with severalstep-shaped sections concentric with the curvature of the roll 30 andwith a curved extremity on a counterbearing arm 54) mounted for quickdisplacement on the bracket 38 above the roll 30 in a position toreceive and support within a recess formed in the arm the upper forwardend of the stud 40. The arm 50 has extending forwardly from it inconcentric relation to the recess for the stud 40 an integral shaft 52on which the edge gage 48 is rotatably and slidably mounted, the edgegage having a sleeve portion surrounding the shaft 52. The edge gage ispressed yieldingly-downwardly and, in turn, presses the lower edge ofthe welt yieldingly against the guide flange 36 through in Fig. 5.

the action :o'f'a relatively light compression spring '54 coiled aboutthe'shaft 52'be'tw'een'th'e head of a screw '56 threaded into the shaftand the lower edge of a counterbore in the sleeve portion of the edgegage.

For ipreventi ng rotation of the edge gage.- and for con venience -inthreading the welt beneath the moistening roll 30, the edge gage' tfihassecured to its sleeve portion by a screw 58 a spring supported'key 60passing through a slot .in the sleeve portion of the'edge gage and intoa recess formed in -the shaft 52. Uponsliding the edge gageupwardlyalong "theshaft 52, the shaft 52 displaced the key60 from therecess. As soon as the key is displaced from the recess in the' shaftthe edge gage may be 1 rotated until one of its'step portions slidesover the alin'ement with the recess in the shaft 52.

The welt immersing guide mu 30 has a fiat outer periphery for engaging aflat welt-46 similar to that shown When a'be'aded' storm welt is to beoperated upon the'roll 30 is removed from the shaft 40 and a roll 62('Fig. 6) "having agroove 63 is substituted. The bead of the welt thenfits into the 'grooveand is guided thereby.

To enable ready removal of the immersing roll and easy substitution ofone welt' guideroll for another the counterbearing arm Fil whichsupports the upper end of the stud 40 is provided with quicklyreleasable clamping means. For. this purpose the arm has passing throughits upper enda thumb screw 64 threaded at its lower end in the bracket38 with its axis running parallel to the axis of the studetl. When thearm 50 is engaged with the stud 40, tightening the thumb screw securesthe'parts in fixed relationship. Uponfloosening the thumb screw the armmay be lifted and rotated on the thumb screw to swing it clear oftheroll 30 for rernoval of the roll. To assist in holding the armclear ofthe immersing roll the bracket beneath the arm is counterbored toreceive a coil spring66 which. bears-at its upper end against the undersurface of the counterbearing arm.

To adjust the extent of w elt immersion the bracket 38 which isslidingly mounted on the vertical rod -41 at its upper end is formedwith a bore within which is mounted a coil spring 68 compressed betweenthe lower end of the bore in the rod and the upper end of a passage inthe bracket which surrounds the rod.

The rearwardportion ofthe bracket 38 also has a slot 70 through which ascrew 72 passes (see Figs. 4 and 8). Engaging the upper end of the screwis a thumb nut 73 acting to limit the upward movement of the bracketunder the pressure of the spring 68. By rotating the thumb nut theextent of welt immersion may be increased or decreased. The lower end ofthe screw 72 is split and has rotatably mounted on a pin 74 passingdiametrically through it, the upper end of a link 76. The lower end ofthe link is pivotally mounted on a pin '78 secured in a cylindricalblock 80 rotatably mounted on a threaded pivot 'screw'82 fixed to thelower end of the rod 41. Rotation of the block 80 on the pivot screw 82causes the bracket 38 to bez-lowered a fixed amount or raised by thespring 68 to bring the welt engaging the roll 30 above the level'44 ofthe liquid in the'receptacle 6. For rotat-' ing the block 80, it isprovided with a handle 84 (Figs. 1

and projecting forwardly in a convenient position for manipulation theoperator. To limit rotation of the block 80 on its pivot screw itcarries a pin 85 arranged toengage the rearward side of the rod 41, theforce of the spring 68 and the friction of the parts serving to maintainthe bracket 4} in position at either limit of its vertical movement.When in raised position the immersing guide roll isaccessible forcleaning purposes and the welt may readily be threaded beneath it. Alsoit is desirable .to retain the'welt above the level of the moisteningliquid at all "times when the machine is not operating, the handle 84being actuated to bring the welt into an immersed position just beforestarting a welt sewing operation.

By reason of the reduced friction on the welt as it passes over'the'guide rolls it is possible to employ a simple form of welt feed dogmounted for reciprocation along a path parallel toxthe weltsubstantially throughout its length between the receptacle and thestitch forming'devicesfor pullin'gwelt through the moistening liquid andfor delivering it in a condition free of tension to the stitch formingdevices without causing indentation or other injury to the welt byreason of the action of the feed dog. The 'feed dog is illustrated at 86in Figs. 7, 9, and 10. 'In Fig. 7 it is shown with a serrated edge alongits free end engaging the welt 46 to press it yieldingly against theguide surface of a U-shaped plate 88. The plate 88 has at one end aperforated ear through which passes a dog operating shaft 90. The shaft90 also has secured to it'a flanged block 92, a pin94 passing through itand the shaft. The plate 88 is in the form of a removable spring cliphaving a'reverse'ly bent part engaging an angular recess '96 in theblock 92. With the use of a flat'welt it is pressed by the feed dogagainst the plate 88 (Fig/9). When a beaded storm welt 93 '(Fig.

10.) is being operated upon, the clip is removable by disengaging itsreversely bent portion from the recess '96, and slipping the perforatedear from the end of the shaft 9%. When the plate is removed from theblock '92, a groove 98 in the block is exposed so that the bead of thewelt may {enter therein and provide a firm support for the welt '(seeFig. 1 0).

The feed dog 86 is :pivo'tally 'mounted'by means of a pair of alinedscrews 100 threaded into the flanges of the block 92. The feed dog isslotted through its central portion as 'best'shown in Fig. 7 and withinits slot there "is disposed one end of a tension spring 102 engaging apin 11M passing across the slot in the dog.- The spring 102 also isengaged with a pin 166 passing between the flanges of the 'block '92 insuch aposition that the spring extends from the pin 104 at one side ofthe screws 1%,

acting to draw the feed dog'yieldingly into engagement with the welt."When the dog is swung about its pivot screws, the spring 102 movesacross the axis of the screws with a snap action to'hold the dog awayfrorn the welt engaging surface of the plate 88 or from the underlyingblock 9221s the case'may be, while a new welt is being threaded throughthe machine. 1 For convenience in swinging the dog toward ;and from thewelt it has projecting from it a stud 107. To limit the movement of thedog away from the welt the dog has a shoulder which engages a pin M8carried by the block 92 (Fi 19).

During operation of the machin'ethe feed dog 86 and its mounting block92-a're actuated with a stroke slightly greater thanthat imparted by thefeeding devices to the shoe being operated 'upon to cause tension freewelt to p any excess not consumed in the sewing operations.

For actuating the welt 'feed dog and its mounting block. the shaft 90 isreciprocated in a bearing formed by a perforated headon a verticalsupport 109. The support iii- 3 is secured in a split clamp formed atone end of a bar illltl through'which passes a clamp screw 112. Thesupport 109 also has secured to its upper end a collar 114 to preventremoval of theisupport when the clamp screw 112 is loosened. The bar'110 is secured to the stanchion 20 of the machine'frame by a nut 116engaging a' threadleft end is a sheet metal brace 120 (see also Fig. 4)bent into angular form, the angular portion of which lies parallel withthe welt as it is delivered from the feed dog.

Pivotally connected with the feed dog actuating shaft 90 at its left endis a downwardly extending boss of a feed adjusting slide 122 (see Figs.1, 2, 3 and 4). The feed adjusting slide 122 is clamped within a slot124 of a horizontal cam actuated feed lever 126 fulcrumed at its forwardend on a vertical pin 128 secured to the frame of the machine. Foractuating the work feeding awl through its feeding movements the awl ismounted for oscillation on a feed carrier 130 having a lower slottedportion arranged in parallel relation to the feed lever 126. Within theslotted portion of the feed carrier 130 projects a block 132 pivotallymounted on a stud'134 passing through the feed adjusting slide 122. Forsecuring the feed adjusting slide to the feed lever the lower end of thestud 134 is threaded to receive a clamp nut 136 acting to clamp theadjusting slide to the lever. As will be apparent from Figs. 2 and 3 ofthe drawings the point of pivotal connection of the dog actuating shaft90 to the feed adjustingslide 122 is further away from the fulcrum shaft128 than the stud 134 which actuates the feed carrier. Thus, the rate ofmovement imparted to the feed dog 36 will always be greater than therate of movement imparted to the shoe feeding awl 5 with the same excessof feeding movement of the feed dog toward the point of operation of thestitch-forming devices so that tension-free welt will be delivered atall times to the machine.

The nature and scope of the invention having been indicated and aparticular embodiment having been described, what is claimed is:

1. A welt tempering device for use with a shoe sewing machine, having amain frame, and a receptacle on the main frame for moistening liquidinto which the welt is dipped by twisting about a lengthwise axis of thewelt, in combination with a welt immersing guide mounted above thereceptacle and provided with a roll for pressing the welt beneaththelevel of the liquid in the receptacle, a fixed edge guide flangeextending into the liquid in the receptacle at an angle to the liquidsurface and acting to direct one edge of the welt, a stud on which theroll is rotatably mounted extending upwardly from the higher side of andat right angles to the flange, and

two guide rolls on the flange rotating on axes parallel to 7 that of theimmersing roll, between which guide rolls the immersing roll stud ismounted.

2. A welt tampering device for use with a shoe sewing machine, having amain frame, and a receptacle on the main frame for moistening liquidinto which the welt is dipped by twisting about a lengthwise axis of theWelt, in combination with a Welt immersing guide mounted above thereceptacle and provided with a roll for pressing the welt beneath thelevel of the liquid in the receptacle, an edge guide flange extendinginto the liquid in the receptacle at an angle to the liquid surface andacting to direct one edge of the welt through the liquid, a stud onwhich the roll is rotatably mounted extending upwardly from the higherside of the flange, and a resilient edge gage engaging the other edge ofthe welt to press it against the guide flange. v

3. A welt tempering device for use with a shoe sewing machine,.having amain frame, and a receptacle for moistening liquid on the main frame, incombination with a welt immersing guide mounted above the receptacle andprovided with a roll'for pressing the welt beneath the level of theliquidin the receptacle, said roll rotating on an axisinclined to thelevel, ofthe liquid to direct thewelt with a twisting action about theaxis of the welt, an inclined edge guide flange extending into theliquid in the receptacle and acting to direct one edge of the Weltthrough the liquid, a stud on which the roll is rotatably mountedextending upwardly from the higher side of the flange, means forsupporting the upper end of the stud arranged for quick displacement toenable ready removal of the immersing roll from the stud, a resilientedge gage rotatably and slidably mounted engaging the other edge of theWelt to press the welt yieldingly against the guide flange and means forpreventing rotation of the edge gage on its mounting.

4. A welt tempering device for use with a shoe sewing machine, having amain frame, and a receptacle for moistening fluid onthe frame, incombination with a welt immersing guide comprising a bracket providedwith an edge guide flange extending into the receptacle, a studprojecting upwardly at an inclination to the level of the liquid in thereceptacle from the flange, a roll rotatably mounted on the stud todirect the welt from the guide into the machine with a twisting actionabout a lengthwise axis of the welt, a bearing arm carried by thebracket and engaged with the upper end of the stud, and quicklyreleasable clamping means having a thumb nut for securing the bearingarm to the bracket.

5. A welt tempering device for use with a shoe sewing machine, having amain frame, and a receptacle for moistening fluid on the frame, incombination with a welt immersing guide comprising a bracket providedwith an edge guide flange extending into the receptacle, a studprojecting upwardly at an inclination to the level of the liquid in thereceptacle from the flange, a roll rotatably mounted on the stud todirect the Welt from the guide into the machine with a twisting actionabout a lengthwise axis of the welt, a, bearing arm carried by thebracket and engaged with the upper end of the stud, quickly releasableclamping means having a thumb nut for securing the bearing armto thebracket, said bearing arm having an integral shaft and an edge gagerotatably and slidably mounted on the shaft to press the welt againstthe guide flange.

6. A welt shoe sewing machine having a main frame, stitch forming andshoe feeding devices in the frame, mechanisms for actuating saiddevices, a guide for directing a welt into the point of operation of thestitch forming devices, a receptacle for moistening liquid on the frameand a welt immersing guide mounted above the receptacle and providedwith means for pressing the welt beneath the level of the liquid in thereceptacle including a freely rotatable roll, in combination with ayieldingly actuated welt feed dog mounted for reciprocation along a pathparallel to the movement of the welt between the receptacle and thestitch forming devices and arranged to draw welt from the'receptaclewhile moving in one direction and to apply a frictional action to thewelt in the other direction, and a connection between the mechanism foractuating the shoe feeding devices and the feed dog to pull welt beneaththe roll through the moistening liquid within the receptacle and todeliver it to the stitch forming devices free of tension.

7. A Welt shoe sewing machine having a main frame, stitch forming andshoe feeding devices in the frame, mechanisms for actuating saiddevices, the feeding device mechanism being adjustable to change thelength of feed, a guide for directing a welt into the point of operationof the stitch forming devices, a receptacle for moistening liquid on theframe and a welt immersing guide mounted above the receptacle andprovided with means for pressing the welt beneath the level of theliquid in the receptacle including a freely rotatable roll, incombination with a yieldingly actuated welt feed dog mounted forreciprocation along a path parallel to the movement of the welt betweenthe receptacle and the stitch forming devices and arranged to draw weltfrom the receptacle while moving in one direction and to apply africtional action to the welt in the other direction, and a connectionbetween the mechanism for actuating the shoe feeding devices and thefeed dog to pull a slight excess of welt beneath the roll through themoistening liquid within the receptacle and to deliver it to the stitchforming devices free of tension, said connection with the feed actuatingmechanism being located to impart the same excess of movement to thefeed dog toward the point of operation of the stitch forming devices inthe machine regardless of adjustments of the feed mechanism.

8. A welt shoe sewing machine having a main frame, stitch forming andshoe feeding devices in the frame, mechanisms connected to said feedingdevices for actuating them including a cam actuated lever having afulcrum on the frame, a receptacle for welt moistening liquid on theframe and welt immersing means mounted on the receptacle and providedwith means to press a welt beneath the level of the moistening liquidincluding a freely rotatable roll, in combination with a welt feed dogmounted for reciprocation along a path parallel to the movement of thewelt, arranged to draw welt beneath the roll from the receptacle whilemoving in one direction and to apply a frictional action to the welt inthe other direction, and connected to the cam lever at a point furtherfrom its fulcrum than that at which the shoe feeding devices areconnected to cause welt to be delivered from the moistening liquidduring each sewing cycle of the machine at a rate greater than that ofthe feeding movement imparted to a shoe by the feeding devices.

9. A welt tempering device for use with a shoe sewing machine, having amain frame, a receptacle for moistening liquid on the frame and a weltimmersing guide mounted above the receptacle and provided with means forpressing the welt beneath the level of the liquid in the receptacleincluding a freely rotatable roll, in combination with means fordelivering the welt from the moistening guide within the receptaclecomprising a guide surface along which the welt moves, a pivoted feeddog mounted for reciprocation along a path parallel to the movement ofthe welt and arranged to draw welt beneath the roll from the receptaclewhile moving in one direction, and a spring connected to the feed dog toapply a frictional action to the welt when the feed dog moves in theother direction and extending at one side of its pivot to press the weltyieldingly into engagement with the guide surface and to move across thepivot when the dog is swung about its pivot to hold the dog away fromthe welt engaging surface while a new welt is being inserted.

10. A welt tempering device for use with a shoe sewing machine, having amain frame, a receptacle for moistening liquid on the frame and a weltimmersing guide mounted above the receptacle and provided with means forpressing the welt beneath the level of the liquid in the receptacleincluding a freely rotatable roll, in combination with means fordelivering the welt from the immersing guide within the receptaclecomprising a guide surface along which the welt moves, a pivoted feeddog mounted for reciprocation along a path parallel to the movement ofthe welt and arranged to draw welt beneath the roll from the receptaclewhile moving in one direction, a spring connected to the feed dog toapply a frictional action to the welt when the feed dog moves in theother direction and extending at one side of its pivot to press the weltyieldingly into engagement with the guide surface and to move across thepivot when the dog is swung about its pivot to hold the dog away fromthe welt engaging surface while a new welt is being inserted, a manuallyoperable stud on the feed dog for swinging it away from the welt andmeans for limiting the movement of the feed dog away from the welt afterthe spring has moved across the feed dog pivot.

11. A shoe machine having a main frame, shoe feeding devices in theframe, mechanism connected to said feeding devices for actuating them,including a cam actuated lever having a fulcrum on the frame, and aguide for directing a welt into the point of operation of the shoefeeding devices, in combination with a reciprocating welt feeding dogconnected to the cam lever at a point further from its fulcrum than thatat which the shoe feeding devices are connected to cause the welt to bedelivered to the guide at a rate greater than the feeding movementimparted to a shoe by the feeding devices, said dog engaging the weltyieldingly to deliver welt to the welt guide while moving in onedirection and to apply a frictional action to the welt when moving inthe other direction.

12. A shoe machine having a main frame, shoe feeding devices in theframe, mechanism connected to said feeding devices for actuating them,including a cam actuated lever having a fulcrum on the frame, and aguide for directing a beaded welt into the point of operation of theshoe feeding devices, in combination with a welt feeding dog connectedto the cam lever at a point further from its fulcrum than that at whichthe shoe feeding devices are connected to cause the welt to be deliveredto the guide at a rate greater than the feeding movement imparted to ashoe by the feeding devices, and a grooved member within the groove ofwhich the bead on the welt is pressed by the feed dog to support theaction of the dog in feeding the welt.

13. A shoe machine having a main frame, shoe feeding devices in theframe, mechanism connected to said feeding devices for actuating them,including a cam actuated lever having a fulcrum on the frame, and aguide for directing a welt into the point of operation of the shoefeeding devices, in combination with a welt feeding dog connected to thecam lever at a point further from its fulcrum than that at which theshoe feeding devices are connected to cause the welt to be delivered tothe guide at a rate greater than the feeding movement imparted to a shoeby the feeding devices, a grooved member against which the welt ispressed by the feed dog to support the action of the dog in feeding thewelt, and a removable plate on said grooved member for covering thegroove.

References Cited in the file of this patent UNITED STATES PATENTS1,848,960 Lyon Mar. 8, 1932 1,866,003 Ashworth July 5, 1932 1,927,954Schoenky Sept. 26, 1933 1,972,970 Ashworth Sept. 11, 1934 2,160,826Boulton June 6, 1939 2,321,610 Morrill June 15, 1943 2,581,638 DeeringJan. 8, 1952 2,631,564 Stautfer et a1 Mar. 17, 1953

